There is no great secret to this recipe, other than it is fabulous! I made it more patriotic by sprinkling with red white and blue sprinkles. And I used Cheerios instead of Rice cereal. Honestly, anything covered in marshmallows and butter will be fabulous!!
In a small saucepan cook the butter over low heat, until the butter is fully melted. Add the marshmallows little by little and stir until they are fully melted. Add the cereal cup by cup. If you like to have super gooey bars, you may want to use 3-4 cups of cereal. If you like to have a nice balance, add more cereal 4-5 cups (or even six). Believe it or not, but I don't like my bars to be super gooey, so I use more cereal. Stir until the cereal is fully coated.
Press it into the pan. You may want to put some butter on your hands or a rubber spatula to prevent it from sticking. Sprinkle with sprinkles. Cool in the refrigerator for an hour. Cut... serve... and enjoy!